This folder contians 4km Vegetation Health product in Geo-TIFF format
1. The lastest data (example: current year's data) were saved by week
2. The lasest 7 weeks will be updated due to the smoothing technique
3. The data of previous years since 2020 were saved in tar files in this folder
4. This historic data (1981-2019) can be found :
   
https://www.star.nesdis.noaa.gov/data/pub0018/VHPdata4users/VHP_4km_GeoTiff/

If you need those data, please contact us:
Wei.Guo@noaa.gov,
Yan.Luo@noaa.gov,  
Xiwu.Zhan@noaa.gov